Lock-nut for axles.



No. 881,676. PATENTED MAR. 10,1908.

R. T. FITZPATRIGK. LOCK NUT FOR AXLBS APPLICATION FILED OGT.2G, 1907y if To 'all whence# concern:

vIe it known that I, RICHARD .unire srarns rarnrorricn,

.nrcnARD r.v Frr'zra'rnicx, or sr. `LOUIS, MISsoURI, AssIGNOR Osons-HALF 'ro JOHN n.

MILLs, OF sT. LOUIS, MISSOURI.V

. vLoon-NUT Fon axilas.I

T. FITZIAT- Motif, a 'c'itiuen oftheUnited States, resid-A ng'ln the city ofSt. Louis and State of Mis f parts.

souri, have invented new and useful im provements inLoekfNnts Afor Axles, of'which he following. is al specification.

This invention relates to certain new and useful impovementsni nut locks, and has special re rence axle of a vehicle, although not limited in use to such application. y

It is. well known that accidents are frequently caused by the securing nut unscrewing from the axle permitting the wheel to come ofi. -The liabi ity to accldent from this cause is entirely obviated by my invention, which in a simple and economical manner provides for securelyflockingthe nut on the axle, While at'the same tiine it may be readily manipulated to enable the nut to be Aunscrewed, as when itis desired to remove the wheel from the axle to. lubricate the The invention resides in the novel construction and arrangement of parts hereinafter described and particularly ointed out in the claims following the spec` cation. AIn the accompanying drawin Figure 1 is a broken sectiona elevation o the end of a vehicle axle havinga wheel secured thererthreaded end on by means of my. improved nut; Fig. 2 is a perspective view of the end of the axle, the Wheel and nut being removed; Fi 3 is a similar view of a nutprovided Wit my invention; Fie. 4 is a face view showingl the outer side o the=nut with my invention applied thereto 5' Fi 5 is a broken sectional view showing the oc'king bolt in the position in which it would enga e with the teeth on the aXle;`Fig. 6 is a simi ar view showing the position of the retracted locking bolt, in which`position it would not engage with the teeth on the axle; Fig. 7 is'an end view of the-axle showing its liange provided with holes instead of teeth; andvFig. 8 shows the form of pin which would be used with this modification.

Referring now to the drawin 1 indicates the axle having an outer re uced screw. ortion 2, as usual, and a shoulder 3, which is provided on its outer face with a series of teeth 4; 5 indicates the hub of @wheel adapted'to" be inserted on the v A Specification of Letters laten't.` application and caoba 2e, 1907. serial n n. 39ans.

i to 'the provision of novelv Ameans for locking the nut onthe end of the,

Patented Masch 1o, 19o-s.'

" axle 1;4 6a nut adapted to be screwed on the end 2 of the axle,.and having a iange ortion 7 for bearing on the end of the hub. he nutv proper, which as usual is square, has a portion'thereofcut away atene cornerto any required depth, say, for example, a 'quarter of an inch, aording a Hat face or shoulder 8.

Adjacent to this-shoulder a holen() is bored through the nut parallel with the axis there# of,- said holebeing for the reception ofthe locking bolt 10, and having two diameters, the hole of the smaller diameter opening throu h the .Outer face ofthe nut and providin a s oulder 11. The bolt has its inner .end e arged, as indicated at 12, to iit snugly the bore of the hole of larger diameter, and. to

4*provide a shoulder 13. The outer end of the enlarged portion 12 is suitably cut away on one side, as indicated at 14, to provide a flat surface for engaging against the face'of the teeth 4,-and is beveled on its other side, as indicated at 15, to facilitate the passage of thelocking bolt ,over the teeth 4*.. The outer end of the bolt 10 is screw-threaded, and on its sorew-threaded end is screwed'a relatively' narrow nut` 16, having two ilat parallel'A sides,

and a jamb nut17, which is circular and milled, or may be of any desired configuration to enable it to serve-alsoas a thumb nut. Whenv screwed together the nuts 16 and 17 will mutually act u on each other to maintain the nuts in fixe positions, as'will be well understood. f

Between the shoulder 11 provided on the interior of the hole 9 andthe shoulder 13 onA the bolt 10 is mounted 'a coil spring 18, which encirclesf the bolt 10, and tends normally to press the inner end ofthe same into engagementivith the teeth 4 on the axle. In such normal position of the parts, as'shown in Figs. 1- and 5, the nu-t 16 has one of its sides in engagement with, or in close proximity to, the shoulder 8 on the nut, thus preventing the bolt i0' from turning. When the bolt is to be ietractedto permit the nutvto'be unscrewe-d, the operator grasps the thumb-nut 17, pulls the bolt outward and then gives the same a half-turn, whereby the nut 16 will be caused/to rest upon the outer-face of the nut'v 6 and maintain the inner endl of the bolt 10 out of,engagement with the teetl 4. To pre los vent wear of parts the bolt may be thus reteeth 4 until the nut is screwed home.

end may come into engagement with the teeth 4;' if not retracted before screwing on the nut its beveled side will ride over tle t will-be readily seen that after the nut is screwed home the locking bolt will engage one or the other of the'teeth 4, and be held in vsuch engagement by the spring 18 and that it will be impossible for said nut to unscrew by reason of such engagement.

In the modification shown in Fig. 7, I pro vide holes 19 at more or les's frequent intervals in the face of the shoulderand employ a straightbolt 20, which is adapted to pass into one or the other of thesaid holes.

It will be readily seen that the locking nut can be employedl with right or K. left hand threads, and that the direction in which the bolt passes through the nut may be changed to suit the construction of axle or nut,with

y out departing from the spirit of my invention.

I claim 1. In combination with an axle having a screw-threaded end and an annular shoulder adjacent thereto and provided on its face with a number of stops, a nut for said axle having a spring controlled locking bolt ,mounted therein for engagement with said stops, said nut having a portion of its body cut away to form a shoulder, a nut mounted on said bolt and having a lat side bearing against said shoulder and a thumb nut also mounted on said bolt and adapted to be screwed into engagement with said irstnamed nut. 4

2. In combination with an axle having a screw-threaded end and an annularl shoulder adjacent thereto provided with sto s, for said axle having a spring controil ing bolt retractably mounted. therein for engagement with said stops, said nut havingr a portion of its body cut away to provide a shoulder, a nut screwed on said bolt and having a fiat side adapted -to engage said shoulder, a thumb nut screwed onto said bolt and into engagement with said first-named nut,

said bolt upon being retracted being adapted to be turned and have its nut engage the outer face of the axle nut, whereby to hold the bolt in a retracted position. Y*

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

RICHARD T. FITZPATRICH4 Witnesses:

BRUCE S. ELLIOTT, JOHN H. MILLS.

a nut cd lock- A 

